Multiple choice

Which of the following is the principle of a traditional tape player, which is used to play music on a cassette tape?

  1. The photoelectric effect.

  2. Force acting on a current-carrying wire in a magnetic field.

  3. Induced current from the motion of the tape.

  4. Friction between the tape and the machine.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The magnetic imprint on the tape induces a small current in the head, which approximates the original signal and is then amplified for playback.

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